SysTick_Config(SystemCoreClock / RT_TICK_PER_SECOND); NVIC_SetPriority(SysTick_IRQn, 0); } /** * This is the timer interrupt service routine. * */ void SysTick_Handler(void) { /* enter interrupt */ rt_interrupt_enter(); rt_tick_increase(); /* leave interrupt */ rt_interrupt_leave...
NVIC_SetPriority(SysTick_IRQn, 0x00U);} 修改后的：void systick_config(void){ /* setup sys...
SysTick_Config(SystemCoreClock / RT_TICK_PER_SECOND); NVIC_SetPriority(SysTick_IRQn, 0); } /** * This is the timer interrupt service routine. * */ void SysTick_Handler(void) { /* enter interrupt */ rt_interrupt_enter(); rt_tick_increase(); /* leave interrupt */ rt_interrupt_leave...
/* configure the systick handler priority */ NVIC_SetPriority(SysTick_IRQn,0x00U); } /*! \brief turn on selected led \param[in] lednum: specify the Led to be turned on \arg LED1 \arg LED2 \arg LED3 \param[out] none \retval none */ voidgd_eval_led_on(led_typedef_enum lednu...
NVIC_SetPriority(SysTick_IRQn, 0x00U); } 可以通过GPIO API配置LED。使用之前,GPIO外设模块必须开启时钟: /* enable the LED1 GPIO clock */ rcu_periph_clock_enable(RCU_GPIOA); /* configure LED1 GPIO port */ gpio_mode_set(GPIOA, GPIO_MODE_OUTPUT, GPIO_ PUPD_NONE, GPIO_PIN_8); ...
}// 关闭滴答定时器SysTick->CTRL &= ~ SysTick_CTRL_ENABLE_Msk;/* configure the systick handler priority */NVIC_SetPriority(SysTick_IRQn, 0x00U); } 本函数实际上只是调用了 SysTick_Config() 函数,它是属于内核层的 Cortex-M3 通用函数,位于 core_cm3.h 文件中。若调用 SysTick_Config() 配置...
NVIC_SetPriority(TIMER2_IRQn, 2); // 设置定时器2中断优先级 NVIC_EnableIRQ(TIMER2_IRQn); // ...
// #error "TODO 1: OS Tick Configuration."SysTick_Config(SystemCoreClock/RT_TICK_PER_SECOND);NVIC_SetPriority(SysTick_IRQn,0x00U); 代码语言:javascript 复制 voidSysTick_Handler(void){voidrt_os_tick_callback(void);rt_os_tick_callback();} ...
/* capture error */ while(1){ } } /* configure the systick handler priority */ NVIC_SetPriority(SysTick_IRQn, 0x00U);//使能系统中断功能(1ms进入一次滴答定时器中断) } 9、SystemCoreClock是CPU时钟的配置需要根据开发板来定,本次使用的是内部高速时钟经过倍频使用,在system_gd32e23x.c文件中有关于...
NVIC_SetPriority(SysTick_IRQn, 0xFU); } 微秒及毫秒配置函数如下所示,微秒通过systick定时查询实现,毫秒通过微秒实现。 C void delay_us(uint32_t count) { uint32_ttemp; count=count*delay_us_mul; if(count>SysTick->LOAD){ count=SysTick->LOAD ; ...